_Abacus is a full-featured, all-purpose, complete calculator. Abacus can calculate numbers, fractions, decimals, percents, and more. You can convert units and calculate percents, even do math with fractions! Abacus can compare decimals and fractions; and also just do basic calculations and trigonometry. Geometry is one of Abacus's best features. You can calculate the perimeter of a square, find the area of a hexagon, use the Pythagorean theorem to calculate the missing length of the side of a triangle; you can even draw a shape with the Shape Builder. All of these features are just a small fraction of the things this powerful calculator can do! Abacus will most likely be available 2013/14.